Baseline scope
Removal allowance, weather layer, finish material, common trim and labour.
US siding planning guide
US Siding Replacement Cost Planning Guide
A siding total is meaningful only when wall preparation, water management, insulation, openings and trim are specified with the finish material.
Worked planning model
1,800 square feet of siding area: $14,400-$39,600
The calculator's current US baseline is $8-$22 per square foot. Multiplying that baseline by the example quantity produces $14,400-$39,600 before location, finish, complexity, permits and contingency are applied.
Location adjustment
Choose the state and city where the work will occur. The result stays in USD; the site never mixes UK prices into a US estimate.
Risk allowance
Use complexity and contingency for known uncertainty, but keep hidden-condition unit prices visible in the written quote.
This arithmetic is an editorial planning model, not a survey, bid or live contractor-price database. Taxes, incentives, financing and unusual site conditions are excluded unless the calculator states otherwise.
Why prices move
Three scope decisions that change the result
Material system
Vinyl, engineered wood, fibre cement, metal, stucco and natural wood use different substrates, clearances, fasteners, joints and finish cycles.
Water and wall repairs
Failed flashing, rot, insects, sheathing damage and poor window integration must be corrected before new siding conceals the wall.
Openings and access
Corners, windows, doors, utility penetrations, tall elevations, porches and close boundaries increase detailing and labour.
State and city context
Use location as context, not a substitute for inspection
Wind, wildfire, moisture, freeze-thaw and termite exposure influence assembly choices. Local energy codes may also affect continuous insulation. The calculator provides a regional planning interval, while the written quote should identify the tested or approved wall system.
For a useful comparison, give every bidder the same measurements, finish assumptions and exclusions. A low total built on a smaller or vague scope is not a saving.
What the estimate does not know
- Existing concealed damage or hazardous materials
- Exact permit, tax, insurance or association requirements
- Contractor availability, minimum charges or warranty terms
- Product lead times and site-specific access constraints
Quote comparison
Put these items in the written scope
- Measure net wall areas but record corners, openings, gables and difficult elevations separately.
- Specify removal, sheathing checks, weather barrier, flashing, insulation, finish, trim and sealant.
- Agree unit prices and approval rules for hidden wall repair before demolition.
- Confirm permits, lead-safe work, utility detach/reset, painting and cleanup responsibilities.
Ask bidders to mark each item as included, excluded or provisional. Keep alternates separate, and compare payment schedule, change-order process, insurance evidence and warranty alongside the price.
Sources and limitations
Evidence used for this guide
These sources support regulatory, climate, safety and labour-market context. They do not publish the exact calculator range and are not presented as contractor quotations.
- US Department of Energy: Insulation. Used for wall and continuous-insulation context.
- EPA: Renovation, Repair and Painting Program. Used for lead-safe renovation context in pre-1978 homes.
- BLS Occupational Employment and Wage Statistics. Used for regional labour-market context, not retail siding prices.
- HUD housing and building codes. Used to explain state and local code responsibility.
Common questions
Before you request bids
Is siding area the same as floor area?
No. Measure exterior wall surfaces and account for gables, openings, additions and excluded walls.
Does the range include hidden rot?
Only a normal preparation allowance. The quote should state how concealed sheathing or framing repairs will be evidenced and priced.
Should insulation be priced separately?
Yes. Identify material, thickness, R-value, flashing transitions and code implications so quotes remain comparable.
How this page was produced
HomeProjects.money used its published calculator assumptions and the linked public sources to prepare this guide. AI-assisted tools supported drafting and consistency checks; the page was then checked for country separation, arithmetic, source relevance, unsupported claims and user-facing scope. It does not claim first-hand contractor experience. Read the full methodology or report a correction.